* cygwin.din (getpeereid): Export.

	* fhandler.h (class fhandler_socket): Add pipe and id members to
	exchange eid credentials for AF_LOCAL sockets.
	(eid_pipe_name): Declare new method.
	(getpeereid): Ditto.
	* fhandler_socket.cc (fhandler_socket::eid_pipe_name): New method.
	(fhandler_socket::fhandler_socket): Initialize sec_pipe.
	(fhandler_socket::connect): Exchange eid credentials with accepting
	socket process.
	(fhandler_socket::listen): Prepare eid credential transaction.
	(fhandler_socket::accept): Exchange eid credentials with connecting
	socket process.
	(fhandler_socket::close): Close eid credentials pipe if open.
	(fhandler_socket::getpeereid): New method.
	* net.cc (cygwin_getsockopt): Add SO_PEERCRED handling.
	(getpeereid): New function.
	* include/asm/socket.h (SO_PEERCRED): Define.
	* include/cygwin/socket.h (struct ucred): Define new type.
	* include/cygwin/version.h: Bump API minor version.

1 files changed, 11 insertions, 0 deletions

diff --git a/winsup/cygwin/fhandler.h b/winsup/cygwin/fhandler.h
index 3199351ce..d3250d1b2 100644
--- a/winsup/cygwin/fhandler.h
+++ b/winsup/cygwin/fhandler.h
@@ -355,6 +355,16 @@ class fhandler_socket: public fhandler_base
   int type;
   int connect_secret [4];
   HANDLE secret_event;
+
+  HANDLE sec_pipe;
+  pid_t     sec_pid;
+  __uid32_t sec_uid;
+  __gid32_t sec_gid;
+  pid_t     sec_peer_pid;
+  __uid32_t sec_peer_uid;
+  __gid32_t sec_peer_gid;
+  char *eid_pipe_name (char *buf);
+
   struct _WSAPROTOCOL_INFOA *prot_info_ptr;
   char *sun_path;
   struct status_flags
@@ -395,6 +405,7 @@ class fhandler_socket: public fhandler_base
   int accept (struct sockaddr *peer, int *len);
   int getsockname (struct sockaddr *name, int *namelen);
   int getpeername (struct sockaddr *name, int *namelen);
+  int getpeereid (pid_t *pid, __uid32_t *euid, __gid32_t *egid);
 
   int open (int flags, mode_t mode = 0);
   ssize_t readv (const struct iovec *, int iovcnt, ssize_t tot = -1);